Influence of heat treatment on photocatalytic performance of BiVO₄ synthesised by sol–gel method

X. WangKey Laboratory of Inorganic Nonmetallic Materials of Hebei Province, College of Materials Science and Engineering, Hebei United University, No.46, XinhuaWest Road, Hebei, Tangshan 063009, China

Y. ShenKey Laboratory of Inorganic Nonmetallic Materials of Hebei Province, College of Materials Science and Engineering, Hebei United University, No.46, XinhuaWest Road, Hebei, Tangshan 063009, ChinaCorrespondence[email protected]

G. ZuoKey Laboratory of Inorganic Nonmetallic Materials of Hebei Province, College of Materials Science and Engineering, Hebei United University, No.46, XinhuaWest Road, Hebei, Tangshan 063009, China

F. LiKey Laboratory of Inorganic Nonmetallic Materials of Hebei Province, College of Materials Science and Engineering, Hebei United University, No.46, XinhuaWest Road, Hebei, Tangshan 063009, China

Y. MengKey Laboratory of Inorganic Nonmetallic Materials of Hebei Province, College of Materials Science and Engineering, Hebei United University, No.46, XinhuaWest Road, Hebei, Tangshan 063009, China

Abstract

Monoclinic BiVO₄ photocatalyst was successfully synthesised by sol–gel method under different temperatures and holding times. The structural and morphological properties of the synthesised BiVO₄ photocatalysts were characterised by X-ray diffraction and scanning electron microscopy respectively. The photocatalytic activity of the prepared catalysts was evaluated by the photodegradation of RhB under visible light irradiation. It is confirmed that the samples calcined under different temperatures and holding times exhibited different photocatalytic activity under visible light irradiation because calcination under different condition might lead to different purity of monoclinic bismuth vanadate and its grain distribution.

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Influence of heat treatment on photocatalytic performance of BiVO₄ synthesised by sol–gel method